The world must be mad to accept Facebook crypto currency. Even though, half of the world population are stupid does not mean we should allow Facebook to continue with users data miming.
This is not about making transaction easy or accessible to every one, this is all about users data and control freak. Here's good example, Facebook is not allowed in China but the Chinese government allow Facebook to share users details with Chinese companies. Facebook share users data with any company they choose as long as it benefit and increases profits.
Only corrupt and indebted countries like US will support Facebook crypto currency because the us government will be giving full access to all users data. Data sharing should be a crime, Facebook still sharing users data every day. If your new phone come with Facebook link, it means your details has been given to the manufacturer and Facebook can access the phone.